Pressure-regulator.



P. RUSSELL GL A. w. SCHRAMIVI.

PRESSURE REGULATOR.

APPLICATION FILED DEC.2.19I6.

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I PRESSURE REGULATOR.

APPLICATION FILED DEC.2. I916.

Patented Feb. 26, 1918.

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PERCY RUSSELL, 0F PHILADELPI-IlIA, PENNSYLVANIA, AND ADOLPH W. SCI-IRAMM, 0F

RIVERTON, NEW JERSEY, ASSIGNORS T0 ELECTED DENTAL MANUFACTURING COM- PANY, 0F PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

PRESSURE-REGULATOR.

Specification of Letters Patent.

Patented Feb. 26, 191%.

Application filed December 2, 1916. Serial No. 134,615.

1 0 all 1071 0177, it may concern:

Be it known that we, PnnoY RUSSELL and AooLru YV. SGHRAMM, citizens of the United States, residing in Philadelphia, county of Philadelphia, State of Pennsylvania, and lzl-iverton, Burlington county, State of New Jersey, have invented certain Improvements in Pressure-Regulators, of which the following is a specification.

()ne object of our invention is to provide a device for automatically delivering fluid, such as compressed air, at a substantially uniform pressure from a source whose pressure varies, the arrangement of parts being such that the ,apll'ml'flttls closely governs the pressure between the predetermined limits.

\Ve further desire to provide a regulator of the type above noted, with a readily removable valve unit and of such construction that easy access may be had to its interior without the necessity for disconnecting the supply or delivery pipes.

Another object of our invention is to so arrange and construct the parts of the regulator that its operating handle or knob may be easily turned, although being e'lfectually prevented from operation in either direction beyond predetermined limits ;the handle and its associated partsbeing so made that it projects but a relatively short and constant distance beyond the surface of the structure 011 which it is mounted regardless of the position of the valve which it controls.

WVe also desire to so mount the several parts associated with the valve and its operating handle that a blow on said handle will not injuriously affect the device, whose design is such as to permit of its adjustment to supporting structures, such as marble slabs or switch boards, of widely varying thickness.

These objects and other advantageous ends wesecure as hereinafter set forth, reference beinghad to the accompanying drawings, in which,

Flgures l and 2 are respectively a 81(16 elevatlon and a plan of a pressure regulator constructed according to our invention with a valve seat 13 Figs. 3 and 4: are respectively an inverted phragm have been respectively removed;

Figs. 5 and Gare respectively perspective views of the body and coverplate;

Fig. 7 is an enlarged vertical section of the regulator shown in Fig. 1;

Figs. 8 to 10 inclusive are perspective views of details of the invention; and

Fig. 11 is an inverted plan of the nut shown in Fig. 10.

In the above drawings 1 represents an annular body in the form of a casting having ancinlet connection 2 and two outlet nipples 3. Said connection has screwed on it a cap 4: having a threaded nipple 5 and confines a pair of thin screens 6 and 7 in place over the end of the passage through the conduit :2. As shown in Fig. 7, this conduit con tinu'es into the hollow of the body 1 and terminates (Fig. 5) in a plane face inclined at an acute angle to the line of the passage 8, being countersunk concentrically with the end of said passage for the reception of a projecting nipple 9 at one end of a relatively thick plate 10 whose ends are curved to fit into the body 1. Said plate has a hole 11 extending between its faces and also has leading from said nipple 9 a passage 12 which opens on its under face concentrically projecting beyond the plane of said face.

As shown in Fig. 3, the plate 10 is held to the annular body 1 by a pair of screws 14: which pass through it at one end in lines inclined'at an acute angle to its plane, and are-threadedinto. the inclined portion 15,

Figs. 4 and 5, of said body on opposite sides longitudinally slotted for the reception of a spring plate 18 which is riveted in place and is clamped to the face of a raised shoulder 19 at that end of the plate distant from clamped in place by a n 33.

the valve seat 13, there being screws, of which 011615 shown at 20, passing through said plate and through openings 21 111 the hinge spring 18 into a clamping block 22.

It to be particularly noted that the face of the valve 17 and the hinge spring 18 lie in the same plane and that the edge of the clampingblack 22 engaging the hinge spring 18adjacentthe arm 16 is straight and sharp.

The movement of said valve arm 16 with its valve 17, away from the plate 10 is limited by a stop screw 2% which passes through said arm into said plate and in order to prevent chattering I or whistling of said valve we mount a spring piece 25 betwee the under side of the head of the screw 24 and the plate 10 so as to exert friction upon said parts sufiicient to prevent objectionable vibration of said valve. 7

The bottom face of the body 1 is normally closed by a circular plate 26 held in place by a suitable number of screws 28 and the opposite face of said body is similarly closed by a cover plate 27 engaged by the same This stud projects downwardly through the opening 11 in the plate 10 "into engagement vwith a screw 34: adjustably threaded through the valve arm 16 and it is noted that said screw and stud engage each other at a point lying within or immediately adjacent tl e plane which,includes the hinge spring 18 and the face of the valve seat 13. A sleeve I is threaded into the cover plate 27 conentrically with the stud 32 and extends through a suitable opening in a marble slab 36' or other suitable supporting tructure, the outer end of this sleeve being likewise threaded for the reception of a collar or es'cutcheon 87. D As shown in Fig. .6, the passage through the sleeve 351s polygonal in section and is designed to provide a guideway for the flange 38 of a nut 39 so as to hold this from turning While permitting its longitudinal movement.

A coiledspring 40 is mounted within the sleeve between the clamping nut 33 and the, flange '38 of the nut 39' whose position may bevaried by means of a stem 41 passing through itand formed with a thread coact ng with a thread fin said nut. This stem has on its upper end a flange 46, and a cyand the flange -16 is a ring 4C8 threaded into the escutcheon 37 and l'iaving an inwardly V aroectin fiance confinin an anti-friction bearing 1'17 against the flange d6.

\Vith the above described arrangement of parts the regulator may be fitted to a marble or other supporting structure 36 with the utmost case, since the retaining ring ll-S and sleeve 35 together form a threaded stru ture oi constant length upon which the oscutcheon 37 is adjustable toward and from the cover 27. In any case said sleeve with its attached parts may be clamped in place on the slab 36 merely by adjusting the escutcheon or collar 37 which likewise holds the retaining ring 18 tightly against the end of the sleeve.

It the inlet nipple be connected to a source of compressed air such as a tank, the air under pressure will normally be prevented from escaping into the interior of the annular body 1 and thence to the outlets 3, since the hinge spring 18 acts to hold the valve 17 in engagement with its seat- 13. If however, the handle 14 be so turned a to move the nut 89 downwardly upon the spindle 411, the spring 40 is compressed and caused to exert pressm'e upon the stud 32 and hence upon the screw 34: and valve arm 16, the mount of such pressure being depend.- ent upon the position of said nut. When this pressure has been increased sufiicicntly, the valve 17 is moved away from its seat and permits the high pressure air to enter the hollow of the body 1 and pass to the outlets, as well as act upon the diaphragm 31 in opposition to the downward pressure exerted by the spring i0. When the pressure of said air in the body rises to a predetermined point, the diaphragm yields against the action of the spring 10 so that the hinge spring 18 moves the valve 17 to its closed position and holds it closed until the pressure has so far fallen because of the flow of air to the outlets, that the diaphragm 31 is forced down by the spring 10. This causes the stud 32 to act on the arm 16 and move the valve away from its seat so as to permit a further inflow of a In any case, however, the pressure actually existing in the body and supplied to the outlets is maintained constant between certain predetermined limits depending upon the position to which the nut 39 is moved by rotation of the handle 44. Moreover, this pressure in the body is substantially independent of the pressure at which the air is delivered from the source, so that even though this be comparatively high when the device is first put into operation and though it thereafter falls as the air is used, the pressure ofthe air delivered from 'the regulator remains constant between the predetermined narrow limits.

A valuable feature of the invention residesin the fact that the knob or handle 44 remains at the same distance from the adja cent face of the slab 38 re ardless of the position of the nut 39 and ot'the adjustment of the valve'l'f, so that it obviously is not opentc the objection of projecting a considerable-distance beyond the slab when the valve is'cpen. In order to prevent the stem 41 being run out of the nut 39, its lower end has a lateral projection, as indicated at within the body 1 by reason of an accidental. blow on the knob, such as might occur in shipping,

By practical experience we have found that by placing the fine screens 6 and 7 in the inlet conduit immediately adjacent the valve, slight particles such as scale, dust,

etc, are veiyeflectually kept from lodgment' on' the valve or its It will be under stood that this is of vital importance since the device and the valve itself are relatively small in size and even a minute particle of dust or other small body of solid material between the valve and its seat would injuriously affect the operation of the regulator.

By reason of the peculiar mounting of the valve 17 and its associated supporting and coacting structures, we insure that the minute movement of said valve in opening or closing occurs in a line which to all intents and purposes is perpendicular to the plane of the valve seat 13. As a result, wear of the valve is reduced to a minimum, so that even after long continued use there is no leakage past it nor material depreciation of its working face.

The arrangement of the above noted parts is such as to limit the movement of the arm and therefore the flexing of the spring 18 to an amount such as not to over-strain said spring. Moreover, lateral motion of said arm is prevented and there is nothing to interfere with the proper engagement and tight fit of the valve at all times.

1. The combination of a casing having an inlet and an outlet for fluid under pressure; a valve; a spring hinge normally tending to cause the valve to close the inlet; vyieldalole shoulder 51 on the lower end of said inlet and an outlet for fluid under pressure;

a valve; a member carryingthe valve; means operative on said. member and normally tendingto actuate the valve to close the ini let; a diaphragm mounted in the casing and operatively connected to the valve; a -manually operative screw also operativelyv connected to: the valve; a friction member interposed between said screw and the valve; and a stop operative on said valve carrying mem her to prevent its excessive displacement.

3. A pressure regulator consisting of a casing having within it an inlet conduit terminating in an inclined face; a structure in the casing having a passage terminating in a valve seat and connecting with saidinlet conduit; anarm movably connected torthe structure a valve carried by the arm in p0 sition to coact with the valve seat; and means operative on thea'rm for governing the passage of fluid under pressure from the arm and-valve being removable as a unit from the casing. 1

l. The combination of a casinghavinga cover and formed with an inlet conduit terminating in a surface inclined to its general plane; a. member having a portion fib'. ting said surface and removably mounted in the casing, there being a passage in said member forming a continuation of the conduit and terminating in a valve seat; a valve movably carried by said member and coach. ing with said seat; and means for governing the operation of said valve. I

5. The combination of a casing having within it an inlet conduit terminating in an inclined surface; a plate having a passage forming a continuation of said conduit and fitted to said inclined surface; means for re movably connecting said plate to the casing structure; a valve in the casing controlling the flow of fluid through said conduit and passage; and means for controlling said valve.

6. The combination of a casing having an inlet and an outlet; a member mounted within the casing and having a passage forming a continuation of the inlet; a spring strip fixed to the member; an arm mounted on the strip; a valvecarried by the arm and normally held by said spring strip in position to close the passage in said member; with means operative on the arm for con trolling the valve.

7. The combination of a casing having an inlet and an outlet; a member mounted within the casing and having a passage forming a continuation of the inlet; a spring strip fixed to the member; an arm mounted on the strip; a valve carried by the arm and norinlet into the casing, said structure with the Y malty held hysaidvspring strip in position i toaelosot th passage in the member; means same and clamping said casing "to asupporting structure; and means operative through the sleeves for controlling the regulatoiaf p 9. A pressure regulator iincludinga oas'ing having a projecting sleeve; a second sleeve in :line *With said first sleeve; controlling mechanism :for the regulator including a the 'lnemberiinto engagement :Wltll the'arm;

and means acting-on said stud to unseat the spindlepas'sing through said sleeves; :a handle for the spi-ndleoperative adjacent the secondsleeve; and a retaining collar adjustably threaded won the external surfacesof the sleeves and separably iconneetinig the same;

10; The-combination of ;a casing having *an'i'nlet and an outlet; .a perforated member mounted in 'the casing; an arm mounted on said member in the casing and including a part operative to normally close the inlet; a stud projecting through the perforation in valve at will- 1 1. The @combinationof a-casing having an 7 inlet-"and anf outlet; a perforated :m'embr mounted in the easing; an varm mounted on the member and including a part operative to normally close the inlet; a stud project ing through the perforation in the memco ies ox this .z etent my be obtained foiher into engagement with the arm; manually controlled means operative on the stud for unseating the valve at will; and fluid pressure actuated means also operative on the stud to oppose said first means.

1-2. The'combifnatiton in a pressure regulator of a casinghaving an inlet and an outlet for fluid under pressure; a removable structure mounted in the casing having a passage iorming a continuation of the inlet; a spring strip clamped to said structure; an arm carried by said strip; a valve mounted on said arm in position to closesaidpassage; and mechanism removahly'engaging the arm for unseating the valve at will,

13. The-combination ofa casing having an inlet and an outlet for :fluid under pressure; a diaphragm in the casing; astud carried by said diaphragm; a plate in the casing having an opening for the passage of said stud and provlded With a passage connected to the inlet; an arm movably mounted on said plate; a valve carried by the arm in position to con trol the flow 0ffluid through the passage into the casing; a screw mounted in the-arm and engaging the stud; with mechanism operative on the diaphragm for 'unseatin-g the valve at will. I

14. The combination in a pressure regulator :of a casing; a diaphragm; a stud'carried by-said diaphragm; a plate having an opening'for the passage of the stud; an arm movably-mounted on the plate; a screw carried bythe arm and engaging the stud; and a valve also carried by the arm for controlling the flow of fluid into the casing.

PERCY RUSSELL. ADOLPH W. SCI-IRAMM.

flve'cents each; ad'rh'eseine; the Commissioner of Patents.

Washington, D. G. 

